SYSTEM FOR MEASURING PULSE WAVE OF BLOOD VESSEL

摘要

A system (10) for measuring a pulse wave of a blood vessel is equipped with an optical probe (12) attached to a portion of a blood vessel (8) of a subject (6) and suitable for obtaining a pulse wave, a pulse wave waveform outputting section (30) which is connected to the optical probe (12) via an optical probe circuit (20) and outputs a pulse wave waveform as a variation in frequency with time using a phase shift method, and a calculating section (50). A module (56) for setting a floating middle value of the calculating section (50) has a function of amplifying the maximum amplitude value so that the ratio of the maximum amplitude value of cyclic frequency data to the calculation range may be a predetermined value and floatingly setting the middle value of the maximum amplitude value to the middle value of the calculation range, regardless of the absolute value of the middle value.